Rotary engine.



3 SHEETS-SHEET l.

A. L. LAMAR y I ROTARY ENGINE.

I APPLICATION FILED DEC. 3'. I913- 'RENEWED MAR. 9. 1915. 1,156,697. Patented 0ct.12,1915.

F g G awe/M1301:

I itter/"e1 3 A..L. LAMAR.

' ROTARY ENGINE.

DEC. 3. 191

3- RENEW APPLICATION FILED ED MAR. 9.

' Patented 0ct.12,1915.

3 SHEETS-SHEET 2.

A. L. LAMAR.

ROTARY ENGINE.

APPLICATION FILED DEC. 3. I913- RENEWED MAR. 9.19l5.

1,156,697. Patented Oct.12,1915.

a SHEETSSHEET 3.

UNTTD @Thg ATNT TF1.

ALEXIS L. LAMAR, OF PITTSBURG, KANSAS, ASSIGNOR 0F ONE-HALF TO GEORGE A. MORNING, ONE-EIGHTH TO W; P. ALLEN, AND ONE-EIGHTH. TO NEAL ALLEN.

ROTARY ENGINE.

Application filed. December 3, 1913, Serial No. 804,424. Renewed March 9, 1915. Serial No. 13,220.

To all whom it may concern:

Be it known that I, ALEXIS L. LAMAR, a citizen of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a rotary engine, and the object is to provide an engine of this character consisting essentially of driving and driven parts, the former being operated by the gas compressed in the latter.

Other objects and advantages will be hereinafter set forth and pointed out in the specification.

In the accompanying drawings, wherein is shown an improved embodiment of the invention, Figure 1 represents a front elevation of the complete engine, Fig. 2 represents a sectional view on the line 22 of Fig. 1, Fig. 3 represents a sectional view on the line 33 of Fig. 1, Fig. 4 represents a sectional view .on the line 4-4 of Fig. 1, Fig. 5 represents a side elevation of the complete engine with one of the parts of the casing removed, Fig. 6 represents a fragmental I detail view of the actuator and stop for the rotary abutment, Figs. 7 and 8 represent detail sectional views of the rotor, casing and abutment at various positions, and, Fig. 9 represents a fragmental detail view of a modified form of abutment and spring actuating means therefor.

Referring to the drawings in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 10 indicates a two-part casing, the abutting faces of the parts being provided with a suitable bore for receiving the main shaft 11. Each part is also provided .with chambers 12 and 13 forming cylinders 14 and 15. The chambers 12 and 13 are separated by spaced partitions 16, and intermediate said partitions is formed a chamber 17.

The cylinder 14 constitutes a housing for a compressor or pump, adapted to compress gas introduced therein for explosion within the engine cylinder 15. Rotors 18 are keyed to the shaft 11 and are adapted to rotate within the cylinders 14 and 15. The rotors 18 are provided with diametrically opposed blades 19 provided with suitable packing strips 20. The cylinders 14 and 15 are each provided with diametrically opposed enlargements 21, forming housings for rotary abutments 22. The abutments 22 are fixed Patented Got. 112, 1915.

to shafts 23, rotatably mounted and projecting through the walls of the cylinders 14 and 15. The abutments 22 are substantially semi-cylindrical and the diametrical faces thereof are shaped in conformity with the inner surfaces of the cylinders 14 and 15. Movement of the'abutments 22 is limited by cam wheels 24 fixed to the ends of the shafts 23 and having radial faces 25 adapted to engage studs 26 in the adjacent portions of the cylinders 14 and 15. Springs 27 are secured at one end to the projecting ends of the shafts 23 and at the opposite ends to lugs 28 and normally hold the abutments 22 1n the position indicated in Figs. 3 and 4.

A rotary valve 29 is keyed on the shaft 11 and is located in the chamber 17 between the partitions 16. The valve 29 is provided with a pair of diametrically opposed ports adapted to alternately open and close the simllarly arranged ports 31 formed through the partitions 16.

The compressor cylinder 14 is provided with a pair of diametrically opposed inlet openings 32 adapted to be connected with" a suitablegas supply.

The operation of the engine is as follows:

The shaft 11 is first given an initial rotary movement by a suitable external force and this movement is obviously imparted to the rotors 18 and blades 19. During the rotation of the compressor rotor 18 gas is drawn through the intake ports 32 in the compression cylinder and compressed within said cylinder. As the rotors 18 assume the posi- 11 and the openings 31 in the partitions are 7 closed, the gas within the combustion chambers 33 of the engine is ignited by a spark from a suitable spark plug (not shown), a circuit through which is closed by a suitable timer mechanism (not shown). The prodnote of'combustion resulting from the explosion are exhausted through exhaust ports 34 in the cylinder 15.

What I claim as new is:

1. In a rotary engine the combination "with a casing having a substantially cylindrical chamber formed therein, of means for subdividing said chamber into piston contpartments with a spaced valve chamber interposed therebetween, a compression rotor mounted in one of said piston compartments, an engine rotor mounted in the other of said piston compartments, a valve mounted in said valve compartment and adapted to rotate with said rotors, oppositely dis posed blades formed on each of said rotors, oppositely disposed rotary abutments recessed in the walls of said casing and adapted to coact with said blades in forming separate chambers in each of said piston compartments and means coacting with said valve for intermittently and successively connecting each of said separate chambers of said compression compartment with the corresponding chamber of said engine compartment.

2. In a rotary engine the combination with a casing having a substantially cylindrical chamber, partitions subdividing said chamber into piston compartments and a valve chamber positioned therebetween, a compression rotor mounted in one of said compartments, an engine rotor mounted in the other of said compartments, a valve mounted in said valve compartment and adapted to rotate with said rotors, oppositely disposed blades formed on each of said rotors, oppositely disposed rotary abutments recessed into the walls of each piston compartment to subdivide the same into two separate chambers and means coacting with said valve for establishing communication between each chamber of said compression compartment with the corresponding chamber of the engine compartment at the end of the rotary blade stroke of the former and at the beginning of the rotary blade stroke of the latter. r

3. In a rotary engine the combination-with a casing having a substantially cylindrical chamber formed therein, of partitions subdividing said chamber into piston compartments with a valve chamber interposed therebetween, a compression rotor mounted in one of said piston compartments, an engine rotor mounted in the other of said piston compartments, a valve mounted in said valve compartment and adapted to rotate with said rotors, pairs of oppositely disposed blades formed on each of said rotors so that the center line of each pair maintains a constant angle with the other pair, oppositely disposed rotary abutments recessed into the walls of said casing and adapted to coact with said blades in forming separate chambers in each of said piston compart- I merits, and means coacting with said valve for intermittently and successively connect-- ing each of said separate chambers of said compression compartments with the corresponding chamber of said engine compartments.

4. In a rotary engine the combination with a casing having a substantially cylindrical chamber, of partitions subdividing said chamber into piston compartments and a valve chamber positioned therebetween, a compression rotor mounted in one of said compartments, an engine rotor mounted in the other of said compartments, a valve mounted in said valve compartment and adapted to rotate with said rotors, pairs of oppositely disposed blades formed on each of said rotors so that the center line of each pair maintains a constant angle with the center line of the other pair, oppositely dis posed rotary abutments recessed into the walls of each piston compartment to subdivide the same into two separate chambers,

and means coacting with said valve for establishing communication between each chamber of said compression compartment and the corresponding chamber of the engine compartment at the end of the rotor blade stroke of the former and at the beginning of the rotor blade stroke of the latter.

5. In a rotary engine the combination with a casing having a substantially cylindrical chamber formed therein, of means for subdividing said chamber into piston compart-' ments with a spaced valve chamber intera posed therebetween, a compression rotor mounted in one of sa d piston compartments,

an engine rotor mounted in the other of said of said piston compartments and means coacting with said valve for intermittently and successively connecting each of said separate chambers in said compression compartment with the corresponding chamber of said engine compartment.

6. In a rotary engine the combination with a casing having a substantially cylindrical chamber, of partitions subdividing said chamber into piston compartments and a valve chamber positioned therebetween, a compression rotor mounted in one of said compartments, an engine rotor mounted in the other of said compartments, a valve mounted in said valve compartment and adapted to rotate with said rotors, oppositely disposed blades formed on each of same into two separate chambers the center line of each pair maintaining a constant angle with the center line of the other pair, and means coacting with said Valve for establishing communication between each chamber of said compression compartment and the corresponding chamber of the enblade stroke of theformer and at the beginning of the rotor blade stroke of the latter.

In testimony whereof I have signed my name to this specification in the presence of two subscribingv witnesses.

ALEXIS L. LAMAR. v Witnesses: u

F. W. HENRY, THos. A. GRIMES.

gine compartment at the end of the rotor 

